It is an island full of holes that were made by Goro, so he could build his Hot-Spring resort. It has a forest, with three odd-shaped trees.
|Goro||Gedatsu||Dirt Boss||Forest Boss||Hasami|
After Gedatsu landed on this island, he and Goro started to dig, and ended up finding the Dirt Boss, and Gedatsu got him to dig the island for them. After some time, they finally got hot water for the resort, and the Forest Boss to build the resort. It was later linked to Arabasta via tunnels, and now both are connected because of the Hot Spring Resort that they run.
- One Piece Manga — Vol. 33 Chapter 315, cover story: Gedatsu's Accidental Blue-Sea Life Vol. 2, Gedatsu lands on Ukkari Island.
- One Piece Manga — Vol. 35 Chapter 332, cover story: Gedatsu's Accidental Blue-Sea Life Vol. 17, the hot water is found by Dirt Boss.
- One Piece Manga — Vol. 36 Chapter 341, cover story: Gedatsu's Accidental Blue-Sea Life Vol. 25, the Hot Spring Resort is open for business.